Clicking sound?

[bruce5755]

Just lately when I open up almost any application on my P.C., I hear a dull clicking sound coming from my tower.  I assume it's my hard drive, does any-one have an idea what this is and is it a problem? 

It can last up to about 15 seconds, but it does vary!

Many Thanks in advance.

[d0gsb0dy]

Bruce. I should be a bit wary. If it gets worse, suspect the possibility of eventual hard-drive failure. I would suggest you do a back-up of any valuable data onto a flash drive or something of that nature. Better sure than sorry.

[quickthinker]

Its either the PSU fan  catching on the grill at the back or the CPU fan is catching or the hard drive is mapping a bad sector ( indicates the drive is on its way out ) new HD within 3 months

[bruce5755]

Many thanks for your responses!  I think it's time to dig out the warranty info'.